Vyas N K, Vyas M N, Jain S C, Sobell H M
Biochem Biophys Res Commun. 1984 May 31;121(1):188-95. doi: 10.1016/0006-291x(84)90705-8.
2-Methyl-4-nitroaniline ethylene dimethylammonium hydrobromide forms a crystalline complex with the self-complementary dinucleoside monophosphate, 5- iodocytidylyl (3'-5')guanosine. The crystals are tetragonal, with a = b = 32.192 A and c = 23.964 A, space group P4(3)2(1)2. The structure has been solved to atomic resolution by Patterson and Fourier methods, and refined by full matrix least squares. 5- Iodocytidylyl (3'-5')guanosine molecules are held together in pairs through Watson-Crick base-pairing, forming an antiparallel duplex structure. Nitroaniline molecules stack above and below guanine-cytosine pairs in this duplex structure. In addition, a third nitroaniline molecule stacks on one of the other two nitroaniline molecules. The asymmetric unit contains two 5- iodocytidylyl (3'-5')guanosine molecules, three nitroaniline molecules, one bromide ion and thirty-one water molecules, a total of 160 atoms. Details of the structure are described.
2-甲基-4-硝基苯胺氢溴酸乙二甲基铵与自互补二核苷单磷酸5-碘胞苷酰基（3'-5'）鸟苷形成一种晶体复合物。晶体为四方晶系，a = b = 32.192埃，c = 23.964埃，空间群为P4(3)2(1)2。该结构已通过帕特森法和傅里叶法解析至原子分辨率，并通过全矩阵最小二乘法进行了精修。5-碘胞苷酰基（3'-5'）鸟苷分子通过沃森-克里克碱基配对成对结合在一起，形成反平行双链结构。硝基苯胺分子在该双链结构中鸟嘌呤-胞嘧啶对的上方和下方堆积。此外，第三个硝基苯胺分子堆积在另外两个硝基苯胺分子中的一个上。不对称单元包含两个5-碘胞苷酰基（3'-5'）鸟苷分子、三个硝基苯胺分子、一个溴离子和三十一个水分子，总共160个原子。描述了该结构的细节。
